What you see above is the original 1992 Marocco II Corvette Prototype Supercar. What is that? We're not exactly sure. Even though the eBay seller has plenty of magazine articles pictured, information is thin on the ground for this car. It apparently went for $156,564 in 1992, which is about $123,000 above the purchase price of a Corvette at the time. What you got for your money (and still will) is an optioned up C4 with a Superblock 350 CI engine that puts out 500 hp and 500 ft-lbs. Not only does the seller claim the car does 0-60 in 3.9 seconds, it does the quarter in 11.6 seconds, tops 200 mph, gets 29 mpg on the highway, and has near zero emissions. That's right, near zero -- at least, according to the hydrocarbon test it took in New Jersey in 1993. And then there's the bodywork, which, well, doesn't suit us, but it is original. And it is one of a kind. $250,000 gets you into the action.